형님들 COCOS2D-X 배울려고 처음 시작하는데 질문하나만

[형님들(223.62)]

Building mode: debug

Using Eclipse project : C:\COCOS2D-X-Ex\HelloWorld\proj.android

ANT_ROOT not defined. Please define it in your environment.

C:\COCOS2D-X-Ex\HelloWorld>

이거 왜안되 ㅠ 

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